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  1. #1
    Join Date
    May 2011
    Location
    Livermore, CA
    Posts
    1,392

    Default Another question on oxalic vaporizing!!

    So I sent the check out to Heilyser up in Canada for the OA vaporizer today!! Looking forward to getting it after doing lots of research and reading your replies on here!!

    But, I have another dumb question...........how dangerous is the "residue" left on the frames/hive body after treatment?? I mean, can a person pick them up barehanded the day after treatment or is there a time frame?? I read about the grey residue left on the equipment and was just wondering if its safe!! Thanks!
    Coyote Creek Bees

  2. #2
    Join Date
    Jul 2010
    Location
    Auckland,Auckland,New Zealand
    Posts
    5,993

    Default Re: Another question on oxalic vaporizing!!

    When I bought the pack of oxalic crystals from the hardware store (it's used for bleaching timber), I noticed there was hardly any safety instructions on the pack. It's pretty much sold to the masses to do with and handle as they will. Can't be that dangerous.
    44 years, been commercial, outfits up to 4000 hives, now 120 hives and 200 nucs as a hobby, selling bees. T (mostly).

  3. #3
    Join Date
    Dec 2009
    Location
    SNOW SHOE PA USA
    Posts
    1,237

    Default Re: Another question on oxalic vaporizing!!

    Say hello to the bad guy!
    year five==== 31 hives==== T{OAV}

  4. #4
    Join Date
    Jun 2011
    Location
    Kenosha,WI
    Posts
    190

    Default Re: Another question on oxalic vaporizing!!

    Oxalic Acid decomposes into Carbon Monoxide, Carbon Dioxide and Water.

    It is found naturally occurring in honey, rhubarb and spinach.

  5. #5
    Join Date
    Apr 2006
    Location
    Pepperell, MA.
    Posts
    3,770

    Default Re: Another question on oxalic vaporizing!!

    I've used the vaporizer with pretty decent results and never had a problem with damaging residue. I treat only ONCE per year because I don't believe in a single "miracle" mite cure. I do worry about the potential ph change inside the hive and the colony's reaction to that which also makes me happier to treat only once per year. I wear lightweight gloves while I'm treating and the process is quite smooth. To be honest, I've never gone right inside a hive after treatment and I think the bees pretty much take care of residue through travel or internal cleaning or both.
    "My wife always wanted girls. Just not thousands and thousands of them......"

  6. #6
    Join Date
    Feb 2011
    Location
    Belpre,Ohio, USA
    Posts
    1,295

    Default Re: Another question on oxalic vaporizing!!

    BG, When I started using the OAV method these questions were mine as well, I even worried about whether the OA would rust my frame nails causing the frames to come apart. However after several years of use I discovered that my frame nails would be just fine and by applying the OA in the August/September time frame I will not be back in the hives till spring so residue crystals in the hive was never a problem, the bees will clean things up as they prepare for winter.

    About the Heilyser vaporizer, if the unit has a clean burn there will not be much if anything left on the unit, just swish the pan around in some water and wipe dry, however it would be best to avoid immersing the glow plug.
    Last edited by WWW; 12-29-2012 at 12:48 PM.
    Bill...in Southeast Ohio

  7. #7
    Join Date
    Nov 2009
    Location
    Lemont, Il U.S.A.
    Posts
    122

    Default Re: Another question on oxalic vaporizing!!

    Wait until you get those deposits in your lungs.

  8. #8
    Join Date
    Feb 2011
    Location
    Belpre,Ohio, USA
    Posts
    1,295

    Default Re: Another question on oxalic vaporizing!!

    stajerc61, could you go into some detail as to what kind of deposits you are speaking of, some clinical data would be helpful in understanding your statement. If I am to get deposits in my lungs I would like to know what they are. I hope you wasn't just being cynical, that would be disappointing.
    Bill...in Southeast Ohio

  9. #9
    Join Date
    May 2011
    Location
    Livermore, CA
    Posts
    1,392

    Default Re: Another question on oxalic vaporizing!!

    Thanks everyone again!! I am hooked on this Oxalic thing and look forward to being able to use it as a tool against Varroa!!

    As for the safety aspect, ive looked up multiple health warnings on the stuff lately and the repeating common thing is wear eye protection and mask and of course rubber gloves. I plan on using a good mask and goggles and wearing chemical resistant gloves and probably a tyvek suit. I will also pay attention to the wind as well and keep it at my back or atleast my side.

    As I get comfortable I will probably lose the suit and stay with the goggles/respirator. This seems like a great treatment and as long as simple precautions are taken, it sounds like a great way to battle Varroa.
    Coyote Creek Bees

  10. #10
    Join Date
    Sep 2011
    Location
    Reno, NV
    Posts
    2,971

    Default Re: Another question on oxalic vaporizing!!

    About 25% of produced oxalic acid is used as a mordant in dyeing processes. It is used in bleaches, especially for pulpwood. It is also used in baking powder. It is also present in vegetables. In humans, oxalic acid has an oral LDLo (lowest published lethal dose) of 600 mg/kg.

    I don't know how much you weigh but a Kg is about 2.2 lbs. But for me that works out to a dose of 47,727 mg. That is 1.6835 oz.

    Some of the things it is found in like citric acid is found in oranges and other fruit.
    Amaranth, Asparagus, Beans, snap, Beet leaves, Broccoli, Brussels sprouts, Cabbage, Carrot, Cassava, Cauliflower, Celery, Chicory, Chives, Collards, Coriander, Corn, sweet, Cucumbers, Eggplant, Endive, Garlic, Kale, Lettuce, Okra, Onion, Parsley, Parsnip, Pea, Bell Pepper[disambiguation needed], Potato, Purslane, Radish, Rutabaga, Spinach, Squash, Sweet potato, Tomato, Turnip, Turnip greens, Watercress.

    You now have the proof that mother was trying to kill you with all those vegetables.

    Parsley is one of the highest with 1.7 grams of acid per 100 grams or 1.7%. Spinach is nearly 1%
    Stand for what you believe, even if you stand alone.

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